Which of the following is the term for the lungs' resistance to expansion? Multiple Choice Pulmonary ventilation Pulmonary compliance Pulmonary stenosis Pulmonary surfactant Pulmonary impedance
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Select all that apply: A lung disease known as a lung fibrosis results in a decrease in compliance. an increase in compliance. a decrease in tidal volume. an increase in alveolar surface tension.
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Choose the correct answer and explain why the other answers are incorrect 1. Negative intrathoracic pressure is maintained by all of the following EXCEPT (select the incorrect response) Elastic recoil of the chest wall Elastic recoil of the lungs Lubricant in the pleural space Air in the pleural space 2. The pathophysiologic characteristics of pulmonary fibrosis include Increased compliance Decreased compliance Bronchoconstriction Interstitial consolidation 3. Other causes of pulmonary fibrosis include Chronic bronchitis Obstructive sleep apnea Bronchiectasis Inhalation of inorganic dust
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When you breathe, a muscle (called the diaphragm) reduces the pressure around your lungs and they expand to fill with air. The table shows the volume of a lung as a function of the reduction in pressure from the diaphragm. Pulmonologists (lung doctors) define the compliance of the lung as the derivative of this function. $^{5}$. (a) What are the units of compliance? (b) Estimate the maximum compliance of the lung. (c) Explain why the compliance gets small when the lung is nearly full (around 1 liter). (TABLE CAN'T COPY)
Key Concept: The Derivative
Interpretations of the Derivative
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